Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 732 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
2. 2.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) sugar (c) a mirror (d) a small bottle
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting ice (c) baking a cake (d) rusting iron
5. 5.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
6. 6.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) a cotton bud (c) a small bowl (d) a battery cell
7. 7.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a mirror (d) a timer
8. 8.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a few days (c) turmeric powder (d) yeast
9. 9.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a potted plant (c) a clear plastic bag (d) a rubber band
12. 12.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) still runny cream (d) ghee
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the iron setting (b) the same cotton bud (c) how dark the writing is (d) the kind of juice
14. 14.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
15. 15.🪴 Which part of a plant does this job: make seeds? (a) stem (b) leaves (c) roots (d) flower
16. 16.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) amount of water drops (b) the size of the plant (c) sun or shade (d) the kind of plant
18. 18.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it gets wet (d) it changes colour
19. 19.🧺 Do we need a magnet for sprouting seeds? (a) not needed (b) needed
20. 20.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
21. 21.True or false: a balloon is not needed for making butter. (a) False (b) True
22. 22.True or false: vinegar is needed for the leafy bag test. (a) False (b) True
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) a magnet (d) a balloon
25. 25.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
26. 26.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) yeast (c) a cotton bud (d) an adult with an iron
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a magnet (d) lemon juice
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🪴 Which part of a plant does this job: hold the plant in soil? (a) flower (b) stem (c) leaves (d) roots
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a mirror (c) muddy water (d) a balloon
32. 32.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) salt (d) a piece of string
34. 34.True or false: salt water is neutral. (a) True (b) False
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) soap solution (d) a dropper or spoon
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a comb (c) a funnel or spoon (d) an empty bottle
37. 37.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) salt water (d) soap solution

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